Home / 2,613.24-3,920.76-1,313.64

Finding the Fourth Proportional to 2,613.24, 3,920.76 and 1,313.64

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Solution

The fourth proportional to 2,613.24, 3,920.76 and 1,313.64 is: 1,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.24 : 3,920.76 = 1,313.64 : x
  2. Step 2: Convert to fraction form
    2,613.24/3,920.76 = 1,313.64/x
  3. Step 3: Cross multiply
    2,613.24x = 3,920.76 × 1,313.64
  4. Step 4: Simplify right side
    2,613.24x = 5,150,467.17
  5. Step 5: Solve for x
    x = 5,150,467.17/2,613.24
  6. Step 6: Final answer
    x = 1,970.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.